package com.itheima.reggie.common;


import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;

import java.sql.SQLIntegrityConstraintViolationException;

/**
 * 全局异常处理
 * @ControllerAdvice   默认拦截所有 Controller 发出的异常
 * @RestControllerAdvice  默认拦截所有 RestController 发出的异常，并且具有 @ResponseBody
 *     @ResponseBody 将方法返回的数据转换为json字符串给到响应体输出。
 */

// @ControllerAdvice(annotations = {RestController.class, Controller.class})
// @ResponseBody
//另一种方式
//@RestControllerAdvice(annotations = {RestController.class, Controller.class})
@ControllerAdvice(annotations = {RestController.class, Controller.class})
@Slf4j
@ResponseBody
public class GlobalExceptionHandler {

    /**
     * 异常处理器
     * @return
     */
    @ExceptionHandler(SQLIntegrityConstraintViolationException.class)
    public R<String> exceptionHandler(SQLIntegrityConstraintViolationException ex){
        log.info(ex.getMessage());
        String[] split = ex.getMessage().split(" ");

        if(ex.getMessage().contains("Duplicate entry")){
            String msg = split[2]+"账号已存在";
            return R.error(msg);
        }
        return R.error("未知错误");
    }

    /**
     * 异常处理方法
     * @return
     */
    @ExceptionHandler(CustomException.class)
    public R<String> exceptionHandler(CustomException ex){
        log.info(ex.getMessage());

        return R.error(ex.getMessage());
    }
}
